Commit-ID: a3a8908fb02bfa2514750734bfd3afc6c1daeb89
Gitweb: http://git.kernel.org/tip/a3a8908fb02bfa2514750734bfd3afc6c1daeb89
Author: Lucas Stach <dev@xxxxxxxxxx>
AuthorDate: Sun, 25 Oct 2015 16:40:30 +0100
Committer: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
CommitDate: Tue, 15 Dec 2015 09:41:06 +0100
clocksource/drivers/tegra: Allow timer irq affinity change
Allow the timer core to change the smp affinity of the broadcast timer
irq by setting CLOCK_EVT_FEAT_DYNIRQ flag.
This reduces interrupt pressure and wakeups on CPU0 as well as vastly
reducing the number of timer broadcast IPIs.
Signed-off-by: Lucas Stach <dev@xxxxxxxxxx>
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
---
drivers/clocksource/tegra20_timer.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/clocksource/tegra20_timer.c b/drivers/clocksource/tegra20_timer.c
index 6ebda11..38333ab 100644
--- a/drivers/clocksource/tegra20_timer.c
+++ b/drivers/clocksource/tegra20_timer.c
@@ -96,7 +96,8 @@ static struct clock_event_device tegra_clockevent = {
.name = "timer0",
.rating = 300,
.features = CLOCK_EVT_FEAT_ONESHOT |
- CLOCK_EVT_FEAT_PERIODIC,
+ CLOCK_EVT_FEAT_PERIODIC |
+ CLOCK_EVT_FEAT_DYNIRQ,
.set_next_event = tegra_timer_set_next_event,
.set_state_shutdown = tegra_timer_shutdown,
.set_state_periodic = tegra_timer_set_periodic,
--
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